Drilling apparatus



H. H. MARKEY.

DRILLING APPARATUS.

APPLICATION FILED SEPT. 3. 1921.

' Patented; Oct. 24L, 1922..

2 SHEETS-SHEET 1.

HHMar/Zey INVENTOR WITNESS:

ATTO RN EY Patented Oct. 24 1922.

2 SHEETSSHEE 2.

H. H. MARKEY DRILLING APPARATUS- LICATION FILED SEPT. a 1 L%8,39% v HARLEY H. MARKEY, 015 EL DORADO, ARKAN SAS DRILLING APPARATUS.

Application filed September 3, 1921. Serial No. 198,575.

To all whom it may concern:

Be it known that T, HARLEY H. MARKEY, a citizen of the United States, residin at El Dorado, in the county of Union and state of Arkansas, have invented new and useful Improvements in Drilling Apparatus, of which the following is a specification.

My present invention has reference to oil well drilling apparatus.

My object is'to provide in ancoil well drilling apparatus, a more direct and improved means for transmitting power from the engine or other unit to the rotary drilling machine and to the hoisting drum.

The foregoin and other objects which will appear as t e nature of the invention is better understood, may be accomplished by a construction, combination. and operative association of parts, such as is disclosed by the drawings which accompany and which form art of this specification.

In t e drawings Figure 1 is a plan view of a suflicient part of a rotary oil well drillin apparatus to illustrate the application 0 the improvement.

Figure 2 is a sectional view on the line 22 of Figure 1.

Figure 3 is a sectlonal view on the line; 3-3 pf Figure 1.

Figure 4 is asectional view 1-4: of Figure 1.

Referring now to the drawings in detail, the numeral 1 designates the main shaft of on the line an engine or other power unit. In alignment with the shaft 1 there is an auxiliary shaft or shaft extension 2 which is coupled to the shaft 1 by a semi-flexible coupling member 3. The shaft 2 is j ournaled in suitan able bearings 44 and has freely mounted thereon bronze-hushed pinions 5 and 6 'respectively. Each pinion carries a clutch surface 7 and 8' respectively, and slidable on the shaft through suitable keyways there as are clutch members 9 and 10 respectively operated by suitable levers for engaging the clutch surfaces 7 and 8 on the respective pinions 5 and 6.

Parallel with, but ata suitable distance to away from the shafts 1 and 2 there is a drum shaft 11. The drum shaft is journaled in suitable bearings 12 respectively and comprises two sections each of which carries a clutch member 13 and 14 respectively slidable in suitable keyways on the respective sections and is designed, when brought into engagement to cause the sections to revolve in unison. On the outer drum section, which, for distinction, is indicated by the numeral 15 the drum 16 is mounted, the

bearings for the shaft section 15 being in dicated, for distinction, by the numeral 17 respectively, one of the bearings being arranged at each end of the drum.- On the drum shaft 11 there is a comparatively large inion 18 and a relatively small pinion 19.

he pinions 18 and 19 are arranged directly 7 opposite the pinions 5 and 6.

Journaled in suitable bearings 20 and 21 respectively arranged between the shafts 1 and 11 are shafts 22 and 23 respectively. Each of these shafts has on its end, adjacent the main shaft 1, or rather the extension 2 of the main shaft, pinions 24 and 25 respectively which are in meshwith the respective pinions 5 and 6, and the opposite ends of the said shafts 22 and 23. also carry pinions 26 and 27 respectively, that mesh with the respective pinions 18 and-19 respectively.

While forming no part of the present invention, the rotary machine is illustrated and is indicated by the numeral 28, the same receiving motion from the drive shaft 1. The rotary machine is rovided, on its upper face with the usual eveled wheel which is in mesh with a pinion 29 on a. shaft 30 that is journaled in suitable bearings 31. The shaft 30 has one end provided with a clutch element 32 that is designed to be engaged by a similar clutch element 33 on the end of the shaft 2 whereby the shaft 30 is coupled to the shafts 1 and 2. All of the clutch members are provided with suitable operating levers (not shown).

It will be apparent that by bringing the clutch members 7 and 9 to clutching engagement and the clutch members 8 and 10 out of clutching engagement, the shaft 22 will ment, the shaft 23 will be revolved which,

through the medium of its pinion 27 which engages the small pinion on the drum shaft will revolve the drumshaftat a comparatively high ratio of speed. Thus the speed of the drum can be readily regulated. It is, of course, obvious that by reversing the direction of travel of the shaft 1 the drum may be likewise reversely turned either at a high or low rate of speed. It Will be further apparent that by operating the clutch means between the shaft and the shaft 2, the said'shaft 30 may be coupled with or released from the said shaft 2. By providing the semi-flexible coupling 3, between the power shaft 1 and the driven shaft 2 a certain amount of yielding is permit-ted between these shafts. Preferably on the end of the shaft 11 there is secured a cat head 34 which is used for handling heavy material through means of the derrick line, and it is thought that the foregoing description, when taken in connection with the drawings will fully set forth the construction and advantages of the improvement to those skilled in the art to which this invention relates and that further detailed description will not therefore be required. 1

Having described the invention, I claim:

In a drilling machine, the combination with a driven shaft, a rotary machine and, a drum disposed to one side of the rotary' machine, of. a shaft journaled in bearings and flexibly connected to the driven shaft, clutch means between the shaft and the rotary machine, pinions freely mounted on the shaft having clutch surfaces, clutch elements to engage therewith, a sectional shaft for the drum, bearings therefor, clutch means between the shaft sections, operating means for the 'clutch means, a. comparatively large and a comparatively small pinion on the outer section of the drum shaft, shafts journaled in bearings opposite the last mentioned and the first mentioned pinions, and pinions on the ends of these shafts in mesh with the .pinions on the drum shaft and the pinions on the first mentioned shaft.

In testimony whereof 1 aflix my signature.

HARLEY H. MARKEY. 

